Geometric Theorems and Application of the DOF Analysis of the Workpiece Based on the Constraint Normal Line

Figure 4

Several distributions of the normal line of workpieces. (a) Intersection and equivalence of two normal lines. (b) Two parallel normal lines. (c) Three normal lines intersect with one another. 1, Workpiece; 2, fixture; 3, supporting bolt; 4, V-block.

(a)

(b)

(c)